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100

Angles that add to 90 degrees

Complementary


100

An equilateral triangle has three _____ angles

60 degree

100

When two lines intersect, ____ angles are equal. 

opposite

100

Interior angles add up to ____

180 degrees

100

Find the complement of 32'

58'

200

Angles that add to 180 degrees

Supplementary

200

How do you find the value of the missing angles in an isoceles triangle when you know one of the values?


Subtract known value from 180 and then divide by 2

200

When two lines intersect, they create four angles. The total sum of these four angles is ____

360 degrees

200

If a transversal intersects two lines that are not parallel, can you find alternate angles when you have one known value?

No. You can only find alternate angles when the lines are parallel. 

200

Find the supplement of 2'

178'

300

Opposite angles are ____

equal to each other (congruent)

300

How do you find the external angle of a triangle when you know two of its' angles?

Add the two internal angles. They will equal the external angle

300

An angle measures 34'. What is the measure of its' opposite angle?

34 degrees.

300

When a transversal intersects parallel lines, how many pairs of interior angles will there be?

Two pairs

300

<A, C and <B, D are two pairs of opposite angles. If <A, C each equal 40', what do <B, D equal?

360 - (40+2)
360 - 80
280 / 2

<B, D equal 140' each

400
Equal angles that make a Z shape

Alternate angles

400

What is the largest obtuse angle a triangle can have?

178 degrees. The other two angles would be 1'.

400

An angle measures 100'. What is the measure of its' supplementary angle?

80 degrees.

400

When a transversal intersects two parallel lines, how many pairs of alternate interior angles will there be? 

Two pairs

400

The sum of two pairs of opposite angles in intersecting lines will always be:

360'

500

Equal angles that make an F shape

Corresponding

500

What is the smallest acute angle a triangle can have?

1'. 

500

An angle measures 89'. What is the measure of its' complimentary angle?

1 degree.

500

When a transversal intersects two parallel lines, how many pairs of corresponding angles will there be?

Four pairs

500

An angle that measures 256' is called a ____

Reflex angle